TPP1 p.Asp42=
c.126C>T · rs780057326 · VCV1110585
Likely benign
Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0318%, sas)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 3.9 | GERP -1.6, phastCons 1 |
| Overall | ||
| CADD | 10.99 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0318%
South Asian · 29/91,078 alleles
Filtering AF
0.0228%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0196%
Overall
0.00192%
31/1,613,774 alleles · ultra-rare
exomes 30/1,461,600 · genomes 1/152,174 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0318% | 3,141 |
| Remaining individualsnot grpmax-eligible | 0.0032% | 31,242 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- TPP1
- Protein
- p.Asp42=
- Coding
- c.126C>T
- MANE Select
- NM_000391
- dbSNP
- rs780057326
- Type
- single nucleotide variant
- Location
- chr11:6618879 (GRCh38)
- Gene constraint
- LOEUF 0.78 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 90.70 · 2 PDB
Similar variants
- TPP1 p.Asp42Tyr Uncertain significance ★ ⚠ same residue
- TPP1 c.1075+2T>C Pathogenic/Likely pathogenic ★★ same type
- TPP1 c.1076-2A>G Pathogenic/Likely pathogenic ★★ same type
- TPP1 c.1076-2A>T Pathogenic ★★ same type
- TPP1 c.1146-1G>A Likely pathogenic ★★ same type
- TPP1 c.1425+1G>A Likely pathogenic ★★ same type
- TPP1 c.1551+1G>A Pathogenic/Likely pathogenic ★★ same type
- TPP1 c.1551+1G>C Pathogenic/Likely pathogenic ★★ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/tpp1-p-asp42 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown